Home / 11,385.03-15,713.85-7,399.21

Finding the Fourth Proportional to 11,385.03, 15,713.85 and 7,399.21

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Solution

The fourth proportional to 11,385.03, 15,713.85 and 7,399.21 is: 10,212.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,385.03 : 15,713.85 = 7,399.21 : x
  2. Step 2: Convert to fraction form
    11,385.03/15,713.85 = 7,399.21/x
  3. Step 3: Cross multiply
    11,385.03x = 15,713.85 × 7,399.21
  4. Step 4: Simplify right side
    11,385.03x = 116,270,076.06
  5. Step 5: Solve for x
    x = 116,270,076.06/11,385.03
  6. Step 6: Final answer
    x = 10,212.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.